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openvswitch: add seqadj extension when NAT is used.

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When the conntrack is initialized, there is no helper attached
yet so the nat info initialization (nf_nat_setup_info) skips
adding the seqadj ext.

A helper is attached later when the conntrack is not confirmed
but is going to be committed. In this case, if NAT is needed then
adds the seqadj ext as well.

Fixes: 16ec3d4fbb ("openvswitch: Fix cached ct with helper.")
Signed-off-by: Flavio Leitner <fbl@sysclose.org>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Flavio Leitner 2019-03-25 15:58:31 -03:00 committed by David S. Miller
parent 0a25d92c6f
commit fa7e428c6b
1 changed files with 6 additions and 0 deletions
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6
net/openvswitch/conntrack.c
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@ -990,6 +990,12 @@ static int __ovs_ct_lookup(struct net *net, struct sw_flow_key *key,
GFP_ATOMIC);
if (err)
return err;
/* helper installed, add seqadj if NAT is required */
if (info->nat && !nfct_seqadj(ct)) {
if (!nfct_seqadj_ext_add(ct))
return -EINVAL;
}
}
/* Call the helper only if: